You can see more videos on the textbook published by NANKODO Co. www.nankodo.co.jp/g/g9784524228232/ You can buy this textbook by amazon shopping. www.amazon.co.jp/%E3%80%8C%E3%81%A9%E3%81%86%E4%BD%BF%E3%81%86-%E3%80%8D%E3%81%8C%E8%A7%A3%E6%B1%BA%E3%81%99%E3%82%8B-OCT-%E8%A1%80%E7%AE%A1%E5%86%85%E8%A6%96%E9%8F%A1%E6%B4%BB%E7%94%A8%E3%82%AC%E3%82%A4%E3%83%89-Web%E5%8B%95%E7%94%BB%E4%BB%98/dp/4524228233/ref=sr_1_1?dchild=1&ie=UTF8&keywords=%E8%A1%80%E7%AE%A1%E5%86%85%E8%A6%96%E9%8F%A1%20%E5%8D%97%E6%B1%9F%E5%A0%82&language=en_US&qid=1630885689&s=books&sr=1-1
Great video! More videos please.
You can see more videos on the textbook published by NANKODO Co.
www.nankodo.co.jp/g/g9784524228232/
You can buy this textbook by amazon shopping.
www.amazon.co.jp/%E3%80%8C%E3%81%A9%E3%81%86%E4%BD%BF%E3%81%86-%E3%80%8D%E3%81%8C%E8%A7%A3%E6%B1%BA%E3%81%99%E3%82%8B-OCT-%E8%A1%80%E7%AE%A1%E5%86%85%E8%A6%96%E9%8F%A1%E6%B4%BB%E7%94%A8%E3%82%AC%E3%82%A4%E3%83%89-Web%E5%8B%95%E7%94%BB%E4%BB%98/dp/4524228233/ref=sr_1_1?dchild=1&ie=UTF8&keywords=%E8%A1%80%E7%AE%A1%E5%86%85%E8%A6%96%E9%8F%A1%20%E5%8D%97%E6%B1%9F%E5%A0%82&language=en_US&qid=1630885689&s=books&sr=1-1